I am sharing with you an excellent link from the AFB about how to get the most out of Google Docs and Google Drive together with NVDA.

http://www.afb.org/info/living-with-vision-loss/using-technology/assistive-technology-videos/using-google-docs-and-drive-with-nvda/module-1-using-google-docs-and-drive-with-nvda/12345